How to locate a lost Bluetooth device

Basic operating principle of Bluetooth signal

Nowadays, there are many smart devices in everyday life that use Bluetooth to connect and "communicate" to convey information, commands, data... Every device with Bluetooth in the activated state continuously emits signals, which are recognized by other devices that support this connection. This is how they send data wirelessly and connect to each other.

Bluetooth devices, when turned on, can automatically find each other's signals within the allowed range.

Based on that feature, some mobile applications allow users to locate lost, hidden or unknown Bluetooth devices around them with two specific conditions: power on and Bluetooth activated.

iPhone users can install free software like Wunderfind on their phones, or opt for the Pro version with more advanced features. Other free apps with similar functions often have ads covering the interface or constantly suggesting to buy a subscription package. Android also has this software, but no new updates since 2022, less compatible. Therefore, Android users can try UFind, an experience similar to Wunderfind.

How to find lost or hidden devices using Bluetooth

After installing the software suggested above, or other program options that suit your needs, users need to enable Bluetooth on their phone. Opening the application will require granting certain permissions, including agreeing to use Bluetooth. Next, on the software interface, there will be a list of devices that are emitting signals that the phone can detect.

Along with displaying the name, the software also shows the estimated distance from the phone's location to the Bluetooth device to be searched. The distance number will change in real time as the user holds the phone and moves.

The indicator of how close or far the user is from the device they are looking for will be displayed in real time as they move their phone around.

To see more detailed information about a particular device, select its display name, the part with the arrow ( > ). Here, the interface will be more detailed and guide the user to continue moving around while holding the phone, following the changes on the screen to know if they are on the right track to get closer to the device they are looking for.

As you get closer, the display signal will increase and reach 100% (the closer to 100%, the closer you are to the object you want to find), or show that the distance is close to 0 meters. Conversely, as you get further away, the percentage will decrease, or the distance in meters will increase.

If a device appears that cannot be clearly identified by name, or has been found or approached any further after every attempt, it is likely that the Bluetooth device is located in a neighbor's house or office next door.

Source: https://thanhnien.vn/cach-dinh-vi-de-tim-thiet-bi-co-bluetooth-that-lac-185250117124657166.htm